The son-in-law of an elderly Tennessee couple killed when a package exploded at their home has been arrested in connection with their deaths, police say.
Richard Parker, 49, was charged with two counts of felony first degree murder and a single count of premeditated murder, The Tennessean reported
Parker's indictment came after Marion Setzer, 72, died in Vanderbilt University Medical Center in Nashville on Wednesday night. Monday's blast killed her 74-year-old husband Jon, a retired lawyer.
Jon Setzer had been found dead after the explosion, which was reported at about 5 p.m. local time on Monday at the Setzers' house in Lebanon, Tenn., 40 miles east of Nashville.
Investigators from the start zeroed in on a package as the source of the explosion, but have been tight-lipped about its contents or whether anyone was targeted.
"Any specific information regarding the package and the circumstances surrounding this incident are under investigation," Tate said Thursday.
An $8,000 reward has been offered for information leading to an arrest and conviction in the case and officials have asked people who see a package they find suspicious to contact local law enforcement officers.
The Setzers attended Lebanon First United Methodist Church, Senior Pastor Mike Ripski said in a statement. Jon Setzer was a student of the Bible, beloved teacher and wise counselor and Marion Setzer had a sweet spirit and gentle demeanor, he said.
"Their home was a 'haven of blessing and place of peace,'" Ripski said. "This horrific tragedy has left the church and all who know them in disbelief and profound grief."
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